-98.73% is the change from 315 to 4
Calculation steps:
[( 4 - 315 ) ÷ 315] x 100 = -98.73%
Formula
Percentage change = [(4 - 315) / 315] x 100
Subtract the new number by the original number
4 - 315 = -311
-311 ÷ 315 = -0.9873015873015873
-0.9873015873015873 x 100 = -98.73%